tekgoblin writes: "On the 21st of April, Amazon Web Services experienced a major outage an outage which took many large websites offline. Websites that were affected included Reddit.com, Hootsuite for example. The outage was chalked up to a change that was made to upgrade network capacity that also shifted traffic off of one of the redundant routers on the Amazon Elastic Block Store. Amazon states that the shift was done incorrectly which caused the outage.

Netflix also resides on AWS but was not affected by the outage and they want to tell you why. Netflix was designed to be aws Netflix reflects on the AWS outageready for exactly the type of failure that happened at Amazon on the 21st. The Netflix servers did not use EBS as their main data storage and when the traffic was routed off the EBS at Amazon Netflix was still up."Link to Original Source